From the Abyss Tuning Device 311040 / Gear_ABC2

From the Abyss damage increases by 10%.
[Grade Bonus]
[Grade D] From the Abyss damage increases by additional 7%.
[Grade C] Increase magic damage against all size enemies by 10%.
[Grade B] From the Abyss damage increases by additional 8%.
[Grade A] From the Abyss damage increases by additional 10%.